No Kings Event Map: https://www.nokings.org/#map
Find one near you, write down the address and time, and head out tomorrow. (You don’t have to sign up for anything, all you need is the address).
Recommended that you bring a mask, hat, water and snacks. Safety Goggles or Glasses would also be a good idea if you have them.
Bring a sign or the US Flag if you have one.
For privacy reasons you may want to avoid bringing your phone, or place it inside a faraday bag (a really well sealed tinfoil pouch will work, and put it in airplane mode to avoid draining your battery) until you get home.
If you have a first aid kit, it wouldn’t hurt to bring it, just in case.
All 50 states along with Puerto Rico, US Virgin Islands, Guam have protests. Intentionally not one in DC this time with the parade going on there (unlike previous nationwide protests) but there are nearby ones just outside of it in. There are also planned protests outside the US as well
Many multiple per each state as well. Even Wyoming, which is the state with the smallest population and one of the most conservative in the nation, has protest planned in 13 cities